This unit was made out of a wooden body with a poly carbonate faceplate. The brains behind it is the clone system from hyperkin. I had to remake all the baords to save space. This unit can play for hours thanks to its 4.4aH battery pack and produces 8 bit quality sound using a lm386 audio amp. A few concerns from others is that it is too big and not ergonomic but looks do lie. It is as small as it can be. It has to be just big enough to fit the carts and the boards. It is not at all uncomfortable to hold and play. It weighs as much as my laptop transformer and can be held with ease. Please follow this link to watch more about this unit.